When you play a game, do you usually top up to get additional features?
There are many reasons for you to top up metal slug. You might want to buy some new weapons or items, or simply upgrade some of your existing equipment. Or maybe you just want to get rid of the annoying waiting time when entering missions! Whatever the reason may be, topping up is a great way to get what you want in no time. See
https://www.unipin.com/id/metal-slug for better reach.